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Stock Market Data in Firefox: Tracking Your Watchlist Without a Brokerage App

Most investors check the same handful of symbols every day. The workflow is usually: open brokerage app → authenticate → navigate to watchlist → read prices. This is 30-60 seconds for information that takes 5 seconds to consume.

Stock Market and Finance Dashboard for Firefox is a one-step alternative.


Setup in 2 minutes

  1. Install Stock Market and Finance Dashboard from Firefox Add-ons
  2. Open a new tab
  3. Add your symbols: AAPL, MSFT, QQQ, BTC-USD, ^SPX, whatever you track
  4. Done

Every new tab now shows your watchlist with current price and day change.


What symbols are supported

The extension uses public market data APIs. Supported symbol types:

  • US stocks (AAPL, MSFT, TSLA, etc.)
  • Major indices (^SPX, ^IXIC, ^DJI)
  • ETFs (QQQ, SPY, IWM, etc.)
  • Major cryptocurrencies (BTC-USD, ETH-USD)

International stocks: depends on the data source; major ADRs typically work.


What it does not do

This is a watchlist display tool, not a brokerage integration:

  • No account linking
  • No position sizes or cost basis
  • No P&L calculation
  • No order placement

For account balance, unrealized gains, and trading, you need your brokerage app. For "where are my symbols right now," this extension is significantly faster.


Privacy

The only data transmitted is your symbol list (sent to the market data API to fetch prices). No personal information, no account credentials. The symbol list is stored locally in Firefox's extension storage.


Use cases

Morning check: Every morning before work, open Firefox. The first new tab shows the market open — no app switch needed.

During news: When you read something market-moving, open a new tab. See the immediate impact on your watchlist.

End of day: Close the trading session with a quick new tab check. No brokerage app login.


Install Stock Market Dashboard for Firefox


Stock Market Dashboard is one of 11 Firefox extensions I built — see the full series.

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